Valve mechanism for internal-combustion engines.



D. H. ROBEY. VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR. 4' I914. 1,179,655.

Patented Apr. 18, 1916.

2 SHEETS-SHEET I.

F/Ci WITNESSES. INVENTOR/ DUDLEY H. ROBE) Wfiafl 9 I ATTORNEY.

D. H. ROBEY.

VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR. 4, I914.

1,179,655. Patented Apr. 18, 1916.

24 2 SHEETS-SHEET 2.

W/TA/ESSES; L 6 Duo/.5) H. ROBE) fix/7%? 5 M l1 ITOR/VEY with parts partiallybroken away.

DUDLEY H. ROBEY, OF INDIANAPOLIS, INDIANA.

JALVE MECHANISM FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Apr. 18, 1916.

Application filedApril 4, '1914. Serial No. 829,561.

To all whom it may concern:

Be it known that I, DUDLEY H. Roenr, a citizen o'fthe United States, and a res1dent of- Indianapolis, county of Marion, and State of Indiana, have invented a certain new and useful Valve Mechanism forInternal-Combustion Engines; and I do hereby declare that the following is a full, clear, and exact'description thereof, reference being had to the, accompanying drawings, in

which like letters refer to like parts.

The chief feature of thisinvention is a cylindrical rotary valve with one or more flat bearing surfaces for engagmg a flat seat or seats and the arrangement of the means for operating the valve, such as a worm screw tends to hold the valve against its seat or seats. This means, therefore, automatically holds the valve to its seat and with uniformity at all times regardless of wear and the valve never wedges nor sticks so as to interfere with the rotation thereof.

Another feature of the invention is the arrangement of the intake and exhaust ports of the valve in the valve casing sothat by cooperating with theport in the valve, it will cause but an extremely slight intermission between the exhaust and intake. There is only a slight movement of the valve, say six degrees, between the position when the ixhaust is cut off and until the intake of fuel e ns.

he full nature of the invention will be understood from the accompanying drawings and the following description and claims.

In the drawings, Figure 1 is a longitudinal vertical section through an internal.

combustion engine centrally of the cylilpders,

1g. 2 is a horizontal sec ion on the line 2-2 of Fig. 1. Fig. 3 is a similarsection on the line 3-3 of Fig. 1. Fig. 4 is a vertical transverse section on the line 44 ofFig. 3. Fig. 5 .is a transverse sectionthrough a modified form of thevalve casing valve. Fig. 6 is a vertical sectionline 6- -6 of Fig. 5

detail. there shown a, series of cylchambers 11 .and l4 tnrailgh whichapait T 15aare provided, asshownigsl .1 and 3.. llpon the series of cylinders .there is a frame se-. .cured consisting of a'bottom plate 16, a top plate 17, end plates and worm wheel, so that the same 18 and side plates 19. provided with suitable cool- This frame is ing chambers, as shown 1n Fig. 2. In this latter frame'there are a number of valve casings 20, one for each cylinder and incommunication'with the ports '15 of the cylinders. Each valve casing 20, as seen in Fig. 2, has an intake port 21 leading from the intake chamber 22, and an exhaust port 23 leading to the exhaust chamber 24.

Within each valve casing there is acylindrical valve 25 with an upwardly extending stem 26 having a worm wheel 27 thereon which meshes with a worm 28 on a shaft 29 in a casing 30 resting upon the valve frame, as shown in Fig. 1. The shaft 29 is driven by a worm 31 thereon meshing with a worm wheel 32 on a vertical shaft 33 which has near its lower end a worm wheel 34 meshing with a worm 35 on a crank shaft 36 in a bearing 37. The crank shaft is driven by piston rods 38 connected with pistons 39 operating in said cylinders.

The valve 25 is cylindrical and has an outwardly extending horizontal flangev 135 on its lower end operating beneath a shoulder or seat 136 in the valve casing 20. There is also a seat 137 at the upper end of the valve casingagainst which the, upper end of the valve seats. crates in the direction indicated by the arrow so that it tends to lift the valve 25 and hold it against the two seats-136 .and 137 of the valve casing. The surfaces of the valve which engage said seats are horizontal and flat so that there is no wedging whatever of the valve in the seat and no tendency to stick or refuse to operate because of excessive friction.

In the seat of the valve there is a port 40 having a width slightly less but nearly as great as the shorter distance between the exhaust port 23 and the intake port 21 of the valve casing 20. For that reason the intake port is open almost immediately after the exhaust port has been closed and hence no time 1S wasted for the introduction of fuel into the cylinder. Within the The shaft 29. op-

40-so as to limit a passageway 46 and leave it with only an opening in the lower end thereof in position to register successively with the ports 15 in the top of the cylinder. When the chamber 46 registerswith the first port 15, it establishes communicathe valve casing, and bushings 41 in said recesses for forcing sald strips 1m and a galnst the valve.

The invention claimed 1s:

1. An internal combustion engme havmg a cylinderwith a flat end with intake and exhaust ports therein, a cylindrical valve casing mounted thereon with an annular recessed seat on the end adjacent the cylinder and anannular seat in the outer end thereof and intake and exhaust ports in the side thereof, an intake chamber in communication with the intake port in said casing, an exhaust chamber in communicationwith the exhaust port in said casing, a cylindrical valve in said casing with its inner end provided with an annular flanged the casing and with its outer end bearing against the outer seat of the casing, and

having a port adapted to register as the prevent leakage.

valve is rotated with the ports in the side of the valve casing, and means for rotating said valve, which at the same time tends to hold it against said seats and prevent leakage.

2. An internal combustion engine having a cylinder with a flat end with intake and exhaust ports therein. a cylindrical valve casing mounted thereon with an annular recessed seat on the end adjacent the cylin-.

der and anannular seat in the outer end thereofand intake and exhaust ports in the side thereof. an intake chamber in communication with" the intake port in said casing, an exhaust chamber in communication with the exhaust port .in said casing, a eylindrieal valve in said casing with a pasageway leading from the end of said valve adjacent the cylinder to the side of the valve and adapted to registerwvith the ports in the side of the casing, and means for opening said valve which at the same. time tends to hold it against said seats and In witness whereof I have hereunto affixed mysignature in the presence of the witnesses herein name DUDLEY H. RonEY. 

